#include<stdio.h>
void swap(int a,int b);
int main()
{
	int t,a,b;
	t=a;
	a=b;
	b=t;
	return 0;	
} 
void swap(int *a,int *b)
{
	printf("please enter two count :\n"); 
	int i,j;
	scanf("%d",&i);
	scanf("%d",&j);
	swap(i,j);
	printf("the result of exchange is:x=%d,y=%d",i,j);
}
	
